[arch-security] [ASA-201702-19] bzip2: denial of service

[Levente Polyak]

Arch Linux Security Advisory ASA-201702-19
==========================================

Severity: Low
Date    : 2017-02-22
CVE-ID  : CVE-2016-3189
Package : bzip2
Type    : denial of service
Remote  : No
Link    : https://security.archlinux.org/AVG-4

Summary
=======

The package bzip2 before version 1.0.6-6 is vulnerable to denial of
service.

Resolution
==========

Upgrade to 1.0.6-6.

# pacman -Syu "bzip2>=1.0.6-6"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

Description
===========

A use-after-free flaw was found in bzip2recover, leading to a null
pointer dereference, or a write to a closed file descriptor. An
attacker could use this flaw by sending a specially crafted bzip2 file
to recover and force the program to crash.

Impact
======

An attacker is able to create a specially crafted bzip2 archive that,
when processed by bzip2recover, crashes the process resulting in denial
of service.

References
==========

https://bugzilla.redhat.com/show_bug.cgi?id=1319648
https://security.archlinux.org/CVE-2016-3189

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